Open Education – Page 266

May 05

Simple example illustrating the use of check boxes #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

JCheckBoxTest.java Simple example illustrating the use of check boxes. 
import javax.swing.*; 
import java.awt.event.*;

 */

public class JCheckBoxTest extends JPanel 
                           implements ItemListener, 
                                      ActionListener{
  JCheckBox checkBox1, checkBox2;
   
  public JCheckBoxTest() {
    checkBox1 = new JCheckBox("Java Servlets");
    checkBox2 = new JCheckBox("JavaServer Pages");
    checkBox1.setContentAreaFilled(false);
    checkBox2.setContentAreaFilled(false);
   
    checkBox1.addItemListener(this);
    checkBox2.addActionListener(this);
      
    add(checkBox1);
    add(checkBox2);
  }
   
  public void actionPerformed(ActionEvent event) {
    System.out.println("JavaServer Pages selected: " + 
                        checkBox2.isSelected());
  }
   
  public void itemStateChanged(ItemEvent event) {
    JCheckBox checkbox = (JCheckBox)event.getItem();
      
    if (event.getStateChange() == ItemEvent.SELECTED) {
      System.out.println(checkbox.getText() + " selected.");
    } else {
      System.out.println(checkbox.getText() + " deselected.");
    }
  }  
   
  public static void main(String[] args) {
    JPanel panel = new JCheckBoxTest();
    WindowUtilities.setNativeLookAndFeel();
    WindowUtilities.openInJFrame(panel, 300, 75);
  }   
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10317
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

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May 05

Simple button that the user can select to load the entered URL. #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

JIconButton.java A simple button that the user can select to load the entered URL. 
import javax.swing.*;

/** A regular JButton created with an ImageIcon and with borders
 *  and content areas turned off.
 *
  */

public class JIconButton extends JButton {
  public JIconButton(String file) {
    super(new ImageIcon(file));
    setContentAreaFilled(false);
    setBorderPainted(false);
    setFocusPainted(false);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10316
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

Basic tool bar for holding multiple buttons. #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

BrowserToolBar.java A basic tool bar for holding multiple buttons. 
import java.awt.*;
import javax.swing.*;

/** Part of a small example showing basic use of JToolBar.
 *  Creates a small dockable toolbar that is supposed to look
 *  vaguely like one that might come with a Web browser.
 *  Makes use of ToolBarButton, a small extension of JButton
 *  that shrinks the margins around the icon and puts text 
 *  label, if any, below the icon. 
 *
  */
 
public class BrowserToolBar extends JToolBar {
  public BrowserToolBar() { 
    String[] imageFiles =
      { "Left.gif", "Right.gif", "RotCCUp.gif",
        "TrafficRed.gif", "Home.gif", "Print.gif", "Help.gif" };
    String[] toolbarLabels =
      { "Back", "Forward", "Reload", "Stop", 
        "Home", "Print", "Help" };
    Insets margins = new Insets(0, 0, 0, 0);
    for(int i=0; i<toolbarlabels .length; i++) {
      ToolBarButton button =
        new ToolBarButton("images/" + imageFiles[i]);
      button.setToolTipText(toolbarLabels[i]);
      button.setMargin(margins);
      add(button);
    }
  }

  public void setTextLabels(boolean labelsAreEnabled) {
    Component c;
    int i = 0;
    while((c = getComponentAtIndex(i++)) != null) {
      ToolBarButton button = (ToolBarButton)c;
      if (labelsAreEnabled) {
        button.setText(button.getToolTipText());
      } else {
        button.setText(null);
      }
    }
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10314
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

A simple button that contains an image and a label for use in a toolbar #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

ToolBarButton.java A simple button that contains an image and a label for use in a toolbar. 
import java.awt.*;
import javax.swing.*;

/** Part of a small example showing basic use of JToolBar.
 *  The point here is that dropping a regular JButton in a
 *  JToolBar (or adding an Action) in JDK 1.2 doesn't give 
 *  you what you want -- namely, a small button just enclosing
 *  the icon, and with text labels (if any) below the icon,
 *  not to the right of it. In JDK 1.3, if you add an Action
 *  to the toolbar, the Action label is no longer displayed.
 *
  */

public class ToolBarButton extends JButton {
  private static final Insets margins =
    new Insets(0, 0, 0, 0);

  public ToolBarButton(Icon icon) {
    super(icon);
    setMargin(margins);
    setVerticalTextPosition(BOTTOM);
    setHorizontalTextPosition(CENTER);
  }

  public ToolBarButton(String imageFile) {
    this(new ImageIcon(imageFile));
  }

  public ToolBarButton(String imageFile, String text) {
    this(new ImageIcon(imageFile));
    setText(text);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10313
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

mall example showing the basic use of a JToolBar #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

mall example showing the basic use of a JToolBar

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

/** Small example showing basic use of JToolBar. 
 *
 * 
 */

public class JToolBarExample extends JFrame
                             implements ItemListener {
  private BrowserToolBar toolbar;
  private JCheckBox labelBox;

  public static void main(String[] args) {
    new JToolBarExample();
  }

  public JToolBarExample() {
    super("JToolBar Example");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    
    JPanel panel = new JPanel(new BorderLayout());
    labelBox = new JCheckBox("Show Text Labels?");
    labelBox.setHorizontalAlignment(SwingConstants.CENTER);
    labelBox.addItemListener(this);
    panel.add(new JTextArea(10,30), BorderLayout.CENTER);
    panel.add(labelBox, BorderLayout.SOUTH);

    toolbar = new BrowserToolBar();
    content.add(toolbar, BorderLayout.NORTH);
    content.add(panel, BorderLayout.CENTER);

    pack();
    setVisible(true);
  }

  public void itemStateChanged(ItemEvent event) {
    toolbar.setTextLabels(labelBox.isSelected());
    pack();
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10312
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference. The dialog returns a Color object based on the user's selection or null if the user entered Cancel. 

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/** Simple example illustrating the use of internal frames. 
 *
 *   */

public class JInternalFrames extends JFrame {
  public static void main(String[] args) {
    new JInternalFrames();
  }

  public JInternalFrames() {
    super("Multiple Document Interface");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    JDesktopPane desktop = new JDesktopPane();
    desktop.setBackground(Color.white);
    content.add(desktop, BorderLayout.CENTER);
    setSize(450, 400);
    for(int i=0; i<5; i++) {
      JInternalFrame frame
        = new JInternalFrame(("Internal Frame " + i),
                             true, true, true, true);
      frame.setLocation(i*50+10, i*50+10);
      frame.setSize(200, 150);
      frame.setBackground(Color.white);
      frame.setVisible(true);
      desktop.add(frame);
      frame.moveToFront();
    }
    setVisible(true);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10311
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference. The dialog returns a Color object based on the user's selection or null if the user entered Cancel. 

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

/** Simple example illustrating the use of JColorChooser. 
 *
 *  .
 */

public class JColorChooserTest extends JFrame
                               implements ActionListener {
  public static void main(String[] args) {
    new JColorChooserTest();
  }

  public JColorChooserTest() {
    super("Using JColorChooser");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    content.setLayout(new FlowLayout());
    JButton colorButton
      = new JButton("Choose Background Color");
    colorButton.addActionListener(this);
    content.add(colorButton);
    setSize(300, 100);
    setVisible(true);
  }

  public void actionPerformed(ActionEvent e) {
    // Args are parent component, title, initial color.
    Color bgColor
      = JColorChooser.showDialog(this,
                                 "Choose Background Color",
                                 getBackground());
    if (bgColor != null)
      getContentPane().setBackground(bgColor);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10310
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

A JPanel that displays six radio buttons with labels. #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

A JPanel that displays six radio buttons with labels.

import java.awt.*;
import javax.swing.*;

/** A JPanel that displays six JRadioButtons. 
 *
 *.
 */

public class SixChoicePanel extends JPanel {
  public SixChoicePanel(String title, String[] buttonLabels) {
    super(new GridLayout(3, 2));
    setBackground(Color.lightGray);
    setBorder(BorderFactory.createTitledBorder(title));
    ButtonGroup group = new ButtonGroup();
    JRadioButton option;
    int halfLength = buttonLabels.length/2;  // Assumes even length
    for(int i=0; i<halflength ; i++) {
      option = new JRadioButton(buttonLabels[i]);
      group.add(option);
      add(option);
      option = new JRadioButton(buttonLabels[i+halfLength]);
      group.add(option);
      add(option);
    }
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10309
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

Creates three common types of sliders #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

Creates three common types of sliders: one without tick marks, one with tick marks, and one with both tick marks and labels. 

import java.awt.*;
import javax.swing.*;

/** Simple example illustrating the use of JSliders, especially
 *  the ability to specify tick marks and labels.
 *
 *   
 */

public class JSliders extends JFrame {
  public static void main(String[] args) {
    new JSliders();
  }

  public JSliders() {
    super("Using JSlider");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.white);
    
    JSlider slider1 = new JSlider();
    slider1.setBorder(BorderFactory.createTitledBorder
                        ("JSlider without Tick Marks"));
    content.add(slider1, BorderLayout.NORTH);
    
    JSlider slider2 = new JSlider();
    slider2.setBorder(BorderFactory.createTitledBorder
                        ("JSlider with Tick Marks"));
    slider2.setMajorTickSpacing(20);
    slider2.setMinorTickSpacing(5);
    slider2.setPaintTicks(true);
    content.add(slider2, BorderLayout.CENTER);

    JSlider slider3 = new JSlider();
    slider3.setBorder(BorderFactory.createTitledBorder
                        ("JSlider with Tick Marks & Labels"));
    slider3.setMajorTickSpacing(20);
    slider3.setMinorTickSpacing(5);
    slider3.setPaintTicks(true);
    slider3.setPaintLabels(true);
    content.add(slider3, BorderLayout.SOUTH);
    
    pack();
    setVisible(true);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10308
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

May 05

A simple example that illustrates creating panels #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

By Author-Check- Article-or-Video in FromSitesTree.com

A simple example that illustrates creating panels. In Swing, a JPanel can contain custom borders. Typically, utility methods in the BorderFactory class are used to create a border for the panel. Uses the following class:

    * SixChoicePanel.java A JPanel that displays six radio buttons with labels.
import java.awt.*;
import javax.swing.*;

/** Simple example illustrating the use of JPanels, especially
 *  the ability to add Borders.
 *
  */

public class JPanels extends JFrame {
  public static void main(String[] args) {
    new JPanels();
  }

  public JPanels() {
    super("Using JPanels with Borders");
    WindowUtilities.setNativeLookAndFeel();
    addWindowListener(new ExitListener());
    Container content = getContentPane();
    content.setBackground(Color.lightGray);
    JPanel controlArea = new JPanel(new GridLayout(3, 1));
    String[] colors = { "Red", "Green", "Blue",
                        "Black", "White", "Gray" };
    controlArea.add(new SixChoicePanel("Color", colors));
    String[] thicknesses = { "1", "2", "3", "4", "5", "6" };
    controlArea.add(new SixChoicePanel("Line Thickness",
                                       thicknesses));
    String[] fontSizes = { "10", "12", "14", "18", "24", "36" };
    controlArea.add(new SixChoicePanel("Font Size",
                                       fontSizes));
    content.add(controlArea, BorderLayout.EAST);
    JPanel drawingArea = new JPanel();
    // Preferred height is irrelevant, since using WEST region.
    drawingArea.setPreferredSize(new Dimension(400, 0));
    drawingArea.setBorder
               (BorderFactory.createLineBorder (Color.blue, 2));
    drawingArea.setBackground(Color.white);
    content.add(drawingArea, BorderLayout.WEST);
    pack();
    setVisible(true);
  }
}

Note: Brought from our old site: http://www.salearningschool.com/example_codes/ on Jan 2nd, 2017 From: http://sitestree.com/?p=10307
Categories:Programming Code Examples, Java/J2EE/J2ME, Basic Swing
Tags:Java/J2EE/J2MEBasic Swing
Post Data:2017-01-02 16:04:31

Understanding Host-Only Networking in Oracle VirtualBox: Concepts, Tools, IP Addressing, DHCP, and Practical Options

Why a DHCP server join the Active Directory

How to Install DHCP role

Power Shell: DHCP Server and Client

How to? Disable VirtualBox DHCP for host-only network

Simple example illustrating the use of check boxes #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

Simple button that the user can select to load the entered URL. #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

Basic tool bar for holding multiple buttons. #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

A simple button that contains an image and a label for use in a toolbar #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

mall example showing the basic use of a JToolBar #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

Demonstrates the use of a JColorChooser which presents a dialog with three different tabbed panes to allow the user to select a color preference #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

A JPanel that displays six radio buttons with labels. #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

Creates three common types of sliders #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

A simple example that illustrates creating panels #Programming Code Examples #Java/J2EE/J2ME #Basic Swing

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